Battery.



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WILLIAM PETSCHEL, OF WINNIPEG, MANITOBA, CANADA.

BATTERY.

Specification of Letters Xatent.

Application filed February 27, 1911. Serial No. 611,045.

To all whom it may concern:

Be it known that I, WILLIAM PETSCHEL, of the city of Winnipeg, in theProvince of Manitoba, Canada, have invented certain new and usefulImprovements in Batteries, of which the following is the specification.

My invention relates to primary batteries, and the object of theinvention is to provide asimply constructed, efiicient and durablebattery of this kind which, although sealed, can be recharged when theelectrolytes become weak,-and it consists essentially in an outer casingor cylindrical box, an inner cylindrical zinc electrode insulated fromthe box, the electrode being fitted with a suitable terminal, acylindrical carbon electrode supported above the bottom of the zincelectrode and supplied with a permanently closed top extending towardthe zinc electrode, removable plugs carried by the top aforesaid,spacing pieces between the carbon and the zinc electrodes, and meanspermanently inclosing the electrodes within the casing, the parts beingarranged and constructed as hereinafter more particularly described. K iI Figure 1 is a plan view of the battery, a part being shown inhorizontal section, and the sealing compound being removed. Fig. 2 is alongitudinal view centrally through the same,'the section being taken inthe plane denoted by the line X- X, Fig. 1.

In the drawing like characters of reference indicate corresponding partsin each figure.

1 represents a cylindrical casing or box having a closed bottom 2 andopen top within which casing and bottom is inserted an insulatingmaterial 3 formed from fiber or paper.

4 represents the positive or zinc electrode which is cylindrical in formand is provided with a closed bottom .5 and fits snugly within the*paper insulator. The zinc elec trode is supplied with a terminal 6 orbinding post carrying a thumb nut 7 and a ring of insulated material 8at its upper end, which ring insulates the carbon, later referred to,from it.

pound so that 9 is the negative or carbon electrode which is cylindricalin form and has a closed top 10 and'bottom 11 the top being PatentedDec. 3, 1912.-

enlarged so as to extend outwardly to the insulator 8 when saidelectrode is inserted within the zinc electrode.

12 represents the positive terminal which is supplied with a thumb nut13.

14 is a fiber or insulating disk inserted between the bottom of thecarbon and zinc electrodes.

15 and 16 are interiorly threaded ferrules passing through the top ofthe carbon electrode, and fitted with removable plugs 17 and 18,respectively. The ferrules extend beyond the top of the electrode so asto be clear of the cement or composition 19 which seals over the top ofthe battery and retains the parts permanently within the easing. y

20 is a perforated insulating ring located between the carbon and zincelectrodes and held in position by the aforesaid parts.

It is to be noticed that the plug 17 is located so that the depolarizersuch as nitric acid can be placed within the carbon electrode while theplug 18 allows the negative electrolyte to be placed within the chamberA located between the negative and the positive electrodes, it beingunderstood that the plugs are kept clear of the sealing comthey can beremoved at any time.

What I claim. as my invention is:

The combination comprising a cylindrical casing having a closed bottom,a hollow cylindrlcal zinc electrode contained within the casing andinsulated therefrom, said electrode having a closed bottom and open top,a hollow cylindrical carbon electrode within the zinc electrode having aclosed top and bottom, said the carbon electrode and being constructedso as to reserve a chamber between the carbon and the zinc electrodes,aninsulated disk inserted between the bottoms of the said electrodes, aninsulated ring inserted between the top of the carbon electrode andfrictional contact with top extending toward a g eeaeeo the adjoiningface of the zinc electrode, a aforesaid and to the interior of thecarbon perforated rlng Within the chamber aforeelectrode, as and for thepurpose specified. 1e -said spacing the electrodes, terminals ex- Signedat Winnipeg, in the Province of tending from the electrodes, a compoundper- Manitoba, this 30th day of January, .1911.

manently inclosing the electrodes Within the WILLIAM PETSCHEL. casing,and removable screw plugs carried In the presence 0fby the top of thecarbon electrode allowing G...S. R0XBUReH,.

respectively. of entrance to the chamber J. K. ELKIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, 7

Washingten','1). c."

